<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
#div1 input{background:white;}
#div1 input.active{background:yellow;}
#div1 div{width:200px; height:200px; background:#CCC; display:none;}
</style>
<script>
window.onload=function()
{
	new f('div1');
};
function f(id)
{
	var _this=this;
	var oDiv=document.getElementById(id);
	this.aBtn=oDiv.getElementsByTagName('input');
	this.aDiv=oDiv.getElementsByTagName('div');
	
	for(var i=0;i<this.aBtn.length;i++)
	{
		this.aBtn[i].index=i;
		this.aBtn[i].onclick=function()
		{
			_this.fnClick(this);
		};
	}
};
f.prototype.fnClick=function(oBtn)
	{
		for(var i=0;i<this.aBtn.length;i++)
		{
			this.aBtn[i].className='';
			this.aDiv[i].style.display='none';
		}
		oBtn.className='active';
		this.aDiv[oBtn.index].style.display='block';
	};
</script>
</head>

<body>
<div id="div1">
<input class="active" type="button" value="aaa" />
<input type="button" value="bbb" />
<input type="button" value="ccc" />
<div style="display:block;">aaa</div>
<div>alkshcmc</div>
<div>ioqeun</div>
</div>
</body>
</html>
